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CAIE IGCSE Biology 14.1.8 Structure of a Synapse Questions

Practise describing synapse structure by locating neurotransmitter-containing vesicles and receptor proteins on opposite sides of the synaptic gap.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • state that synaptic vesicles contain neurotransmitter molecules
  • label vesicles, neurotransmitter molecules, receptor proteins and the synaptic gap on synapse diagrams
  • locate presynaptic vesicles and postsynaptic receptor proteins on opposite sides of the gap

CAIE IGCSE Biology 14.1.8 Structure of a Synapse Questions question 1

[Maximum number: 2]

Fig. 3.1 is a diagram of the junction between two neurones in a healthy person.
Fig. 3.2 is a diagram of the junction between the same two neurones in a person who has Parkinson's disease. This disease affects the nervous system.

Fig. 3.1

Fig. 3.1

Fig. 3.2

Fig. 3.2

Identify the parts labelled X and Y in Fig. 3.2.

X Y

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